Commit c6952d45 authored by Daniel Verkamp's avatar Daniel Verkamp
Browse files

event: replace outdated reactor run loop comment 



The work item queueing code was replaced with the current reactor/event
model, but the block comment above _spdk_reactor_run() wasn't updated to
match.  Replace the pseudo-code with something resembling the current
behavior, and delete the outdated paragraph below it.

Change-Id: If0686c6a5d063f56d8ea3df9bf3a1e98eef40207
Signed-off-by: default avatarDaniel Verkamp <daniel.verkamp@intel.com>
parent b809cdd3

lib/event/reactor.c

+10 −18
Original line number Diff line number Diff line
@@ -281,26 +281,18 @@ _spdk_poller_unregister_complete(struct spdk_poller *poller) 
\code



while (1)

	if (new work items to be scheduled)

		dequeue work item from new work item ring

		enqueue work item to active work item ring

	else if (active work item count > 0)

		dequeue work item from active work item ring

		invoke work item function pointer

		if (work item state == RUNNING)

			enqueue work item to active work item ring

	else if (application state != RUNNING)

		# exit the reactor loop

		break

	else

		sleep for 100ms

	if (events to run)

		dequeue and run a batch of events



\endcode

	if (active pollers)

		run the first poller in the list and move it to the back



	if (first timer poller has expired)

		run the first timer poller and reinsert it in the timer list



Note that new work items are posted to a separate ring so that the

active work item ring can be kept single producer/single consumer and

only be touched by reactor itself.  This avoids atomic operations

on the active work item ring which would hurt performance.

	if (idle for at least SPDK_REACTOR_SPIN_TIME_US)

		sleep until next timer poller is scheduled to expire

\endcode



*/

static int